DE2047346A1 - Partly lined disc brake - Google Patents

Description

The invention relates to a [partially lined disc brake rrjit your brake disc overlapping pliers, a pair of opposite iti the pliers arranged brake shoes and one Control device for pressing the brake shoes against opposite ones Alongside the brake disc.

The invention provides that each brake shoe has mutually facing abutment surfaces in the device, the Uli eatoprochetiden, ia Utufangsrichtung pointing away from each other Atiochlagl'lächoti on an undrohbaren iCqil of the brake togetherwiri: eti, uru uicj iiror / jokraft on the accruing side of the brake shoes on a ; * c; transferable π part.

Advantageously, include the Ansohlagflachen for the jjrotiiiJb.MO'Kon, which on the pincers or on another threatenable Toil üor üroujue can be arranged radially outside the Wirkuiiijßlinie dor reuultieronden Bremslcraft lying surfaces as well i'lUchen lying roughly within this line of action.

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BAP 0RiGl ^ 4AL

2047348

The invention is preferably applicable to a partially lined disc brake with stationary pliers, the pliers in their area overlapping the brake disc is closed. The actuating device can comprise pistons rotating in opposite directions, which slide in holes in opposite links of the pliers.

The invention, as well as advantageous details of the invention, are shown in the following with the aid of schematic drawings of two exemplary embodiments explained in more detail.

Show it:

Pig. 1 one in the direction of arrows I in Pig. 2 and 4, seen side view of a partially lined disc brake according to the invention;

Fig. 2 is a section along the line II-II in Pig. 1; Pig. 3 shows a section along the line III-III in Pig. 2;

Pig. 4 a partially along the line IV-IV in the Pig. 2 and 3 sectional plan view;

Pig. 5 a partly according to the line V-V in Pig. 6 trained, Tene side view of a second embodiment of the partially lined disc brake according to the invention and

Pig. 6 a section along the line VI-VI in Pig. 5.

The partially lined disc brake according to Pig. 1 to 4 has a stationary tong 10 having a closed lirüoIcenabschnitt II. The clamp 10 comprises two clamp parts 12 and 13 which are connected to each other by bolts 14, which through holes in the upper portion of the gripper part 12 hiudurchrageu and in Gewindebohruugeu 1 ¹ "> in upper section of the pliers part 13 screwed in bind. The pliers part 12 has fastening eyes 16 with which the pliers can be fastened in such a way that they overlap the disc 17,

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204734a

In each pliers part 12, 13 is a blind hole 18, provided, in which a Kolbwn 20, 21 of the hydraulic actuator slides. Each piston 20, 21 rests on the support plate 22, 23 of an associated brake shoe 24, 25 and serves to press the friction pads 26, 27 against the corresponding end face of the brake disk 17. The inner ends of the Blind bores 18 and 19 are connected by a channel 28 which extends through the bridge portion 11 and into the one Leak opening 29 opens. A brake fluid inlet 30 is also connected to the blind hole 18.

As can be seen in particular from FIG. 2, the support plate 22 of the brake plate 24 has I-shaped edge regions On the legs of the I-shaped edge regions 31 projecting radially outwards and inwards, one another in the circumferential direction facing stop surfaces 32 and 33 are provided, which on corresponding stop surfaces pointing away from one another in the circumferential direction 34 and 35 are in contact with the pliers 10.

The stop surfaces 34, which lie radially outside the line of action 36 of the braking force developed on the brake pad 26, are formed on the bridge section of the pliers part 12. The pioneering from each other also in the circumferential direction of the stop surfaces 35 formed on members 37, which are einstük-% piece with the blade part 12th The brake shoe 24 is held radially by guide surfaces 38 and 39, which cooperate with the ends of the I-shaped lateral edge regions 31 pointing radially outward and inward. The outer guide surfaces 38 are formed on the bridge section of the pliers part 12 and the guide surfaces 39 are formed on the links 37.

In Pig. 2 only the brake shoe 24 is shown. The brake shoe 25 is designed in the same way and acts with in stop surfaces and guide surfaces designed in the same way. The radially inner stop surfaces 35 and the guide surfaces 39 are formed on arms 40 that are in one piece

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are with the pliers part 13, while the radially outer surfaces 34 and 38 are formed on the bridge part of the pliers part 13. With the normal direction of rotation of the brake disc 17 in the direction of the part 41 in Pig. 2, i.e. clockwise, the Brake forces applied by friction pads 26 and 27 to the stationary tongs 10 at the stop surfaces 32 and 33 on the left in FIG. 2 recorded. Since the stop surfaces 32 and 33 on opposite sides of the line of action 36 of the resulting braking force are arranged, no torques are applied to the brake shoes 24 and 25 which could cause the brake shoes to rotate.

The fact that the braking forces of the brake shoes on their accruing Pages are added, a greater stability of the brake shoes is achieved because this is in contrast to the known Constructions in which the brake shoes are pushed at their trailing ends against supporting surfaces that absorb the braking force be drawn. This also reduces the tendency to squeak when the brakes are applied. The T-shaped The edge regions 31 designed on both sides of the brake shoes enable braking when the brake disk rotates in both directions of rotation.

Furthermore, the production is simplified because the stop surfaces are located on the outside of the pliers and therefore easier to edit are. In addition, a larger friction pad surface can be achieved, so that the service life of the friction pad is increased will.

FIGS. 5 and 6 show another embodiment which in many respects corresponds to that of FIGS. The same parts are provided with the same reference symbols. The main difference is that no radial guide surfaces 38 and 39 are provided on the pliers 10 ¹ . Instead, the brake shoes 24 'and 25' are held radially by means of central projections <12 on the pistons 20 and 21, which are inserted into central holes 43 in the support plates 22 and 23 of the brake shoes 24 'and 2L>'

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protrude.

The drawings show only one piston on each side of each brake disc; however, it is also possible to have two pistons to be provided on each side of the brake disc, both of them act on one and the same brake shoe.

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Claims (8)

Claims M .j partially lined disc brake with a brake disc engaging pliers, a pair of oppositely arranged brake shoes in the pliers and an actuating device for pressing the brake shoes on opposite sides of the brake disc, characterized in that each brake shoe (24, 25) in the circumferential direction facing stop surfaces ( 32, 33) which cooperate with corresponding stop surfaces (34, 35) pointing away from each other in the circumferential direction on a non-rotatable part (10) of the brake in order to transmit the braking force on the leading side of the brake shoes to the non-rotatable part. 2. Partly lined disc brake according to claim 1, characterized in that the stop surfaces (32, 33 and 34, 35) surfaces (32, 34) lying radially outside the line of action of the braking force and radially within this line of action comprise lying surfaces (33, 35). 3. Partly lined disc brake naoh claim 1 or 2, characterized in that the mutually facing away Part (10) having sole surfaces (34, 35) which preferably stationary trained pliers is. 4. Part-lined disc brake naoh claim 3, characterized ge markzeiohnet that the brake disc (17) overlapping part (11) of the pliers (10) is geeohloeaen. -s- 5. Partly lined disc brake according to claim 3 or 4, characterized characterized in that the actuating device is arranged in opposite members (12, 13) of the tongs (10) Cylinder (18, 19) with pistons (20, 21) sliding therein. 6. Partly lined disc brake according to one of claims 2 to 5> characterized in that each brake shoe (24-, 25) has a support plate (22, 23) with T-shaped lateral Edge regions (31), on whose legs protruding radially outward and inward, the stop surfaces (32, 33) are formed. 7. Partly lined disc brake according to claim 6, characterized in that on the non-rotatable part (10) radially inwardly and outwardly pointing guide surfaces (38, 39) are provided are, which cooperate with corresponding surfaces on the ends (31) of the T-legs, around the brake shoes (24, 25) radially to keep. 8. Partly lined disc brake according to claim 5 or 6, characterized in that the pistons (20, 21) have Yorsprünge (42) which ^{protrude into recesses (43) of the brake shoes (24S25 1} ) in order to hold them radially. 1098U / 1610